FULL-DUPLEX DECODE-AND-FORWARD RELAY TO INCREASE ENERGY HARVESTING

摘要

The present invention transmits a power division ratio (ρ) indicating a ratio of power to be used for decoding and energy to be harvested and a signal from a signal received by a relay in a transmission relay system after full-duplex decoding for simultaneous transmission of power division-based wireless information and power SINR (γ) of the first hop channel expressed as a function of the SI channel transmission weight (ω) indicating the beamforming weight to the SI channel among the second hop channel and the self-interference channel (hereinafter referred to as SI) _From the relationship between 1 ) and the SINR(γ ₂ ) of the second hop channel, the failure-free region (hereinafter, OFR) in which the end-to-end SINR(γ) between the base station and the terminal ^{satisfies a predetermined reference SINR(γ * ) or more is detected} And, by dividing the range of the power division ratio (ρ) corresponding to the OFR into K predetermined sections to obtain K+1 representative power division ratios (ρ _k ), and K+1 representative power division ratios (ρ _{k )} ) _, after detecting the SI channel transmission weight (ω _k,j ) that maximizes the energy yield for each, representative power division to obtain the maximum energy yield among energy according to the detected SI channel transmission weight (ω k,j ) By selecting the ratio (ρ _k ) and the SI channel transmission weight (ω _k,j ), it is possible to provide a transmission relay after full-duplex decoding that can maximize the energy harvest while satisfying the end-to-end SINR above the required level.